Flow Switch; First Start-Up - Hayward MICRO HP2021DT3C Manuel D'instructions Et D'installation

5. PUTTING IN SERVICE (continued)

Flow switch

The unit is equipped with a flow switch that turns on the heat pump when the
pool filtration pump is running and deactivates it when the filtration pump is
not running.
If there is a lack of flow, alarm code E03 will appear on the control panel.
Time delay
The unit is equipped with a time delay of 3 minutes in order to protect the
control circuit components, to eliminate restart cycling, and contactor chatter.
Thanks to this time delay, the unit automatically restarts approximately
3 minutes after each control circuit interruption.
Even a brief power interruption will activate the restart time delay.

5.2 First start-up

Start-up procedure - After installation is complete, follow these steps:
1.
Verify that the left- and right-side air vents are not obstructed and that
nothing will impede the free rotation of the fan.
2. Verify that the hydraulic fittings are properly tightened.
3. Verify that the pipes coming from the pool are properly tightened on the
hydraulic fittings.
4.
Plug in the filtration pump, making sure that all of the water valves are
open and that the water is circulating through the heat pump and towards
the pool.
5. Plug in the RCD plug and perform an RCD test (see § 4.5).
6.
Press the On/Off button
7. Set the desired water temperature using the
control panel.
8.
Set the water flow using the bypass valve so that you get an inlet/outlet
temperature difference of 2°C (see § 6.2).
9. Verify that no alarm code is displayed when the unit is on (see
troubleshooting guide § 8.3).
on the control panel.
and arrows on the
13